EP1274611B1 - Dispositif sac gonflable et son procede de fonctionnement - Google Patents

Dispositif sac gonflable et son procede de fonctionnement Download PDF

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Publication number
EP1274611B1
EP1274611B1 EP01940129A EP01940129A EP1274611B1 EP 1274611 B1 EP1274611 B1 EP 1274611B1 EP 01940129 A EP01940129 A EP 01940129A EP 01940129 A EP01940129 A EP 01940129A EP 1274611 B1 EP1274611 B1 EP 1274611B1
Authority
EP
European Patent Office
Prior art keywords
airbag
piston
airbag device
module
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01940129A
Other languages
German (de)
English (en)
Other versions
EP1274611A1 (fr
Inventor
Olaf Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP1274611A1 publication Critical patent/EP1274611A1/fr
Application granted granted Critical
Publication of EP1274611B1 publication Critical patent/EP1274611B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R21/2155—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member with complex motion of the cover; Retraction under the lining during opening

Definitions

  • the invention relates generally to an airbag device and an operating method therefor.
  • the present invention aims and achieves an airbag device and a triggering procedure therefor according to the earlier applications mentioned above continue to improve.
  • a space-saving design and its operating method created for an airbag device can be used as a supplement on the above-mentioned applications for property rights by the same applicant on Use come and advantageously further reduce the aggressiveness of the Bags contribute by mechanics pulling the airbag cover into the dashboard.
  • an airbag device with an airbag module and at least one Airbag cover created which is connected to a piston by means of traction devices, which can be acted upon pyrotechnically for a linear movement, and when the Piston from a closed position in which it has an airbag exit path from the airbag module covers, is moved in an open position in which it exits the airbag from the Airbag module releases, with a screw-like positive guidance provided for the piston is and the traction devices are designed like a rope, so that the piston due to an action executes a rotary movement during its linear movement and thereby the traction devices winds.
  • the positive guidance by at least one Link guide is formed along the path of movement of the piston, the at least one Has extension that abuts the link guide or engages in the link guide.
  • the at least one extension can be formed by a bolt or a screw. Two extensions can also be spaced apart on the piston in the direction of its linear movement provided and each of these two extensions be assigned a backdrop guide. there is particularly preferred if the traction devices over the existing extensions of the piston against the latter.
  • the traction devices have at least one wire, one rope or one Contain tape by means of which the airbag cover is connected to the piston.
  • the rope or wire is made of metal or that the band is made of a textile material or plastic or a mixture thereof.
  • the link guide preferably contains a control edge or a slot link.
  • the object of the invention is further achieved by an operating method for an airbag device, wherein at least one airbag cover by means of traction devices by a piston which is applied pyrotechnically for a linear movement, from a closed position in which it is one Covered exit path of an airbag from the airbag module, moved in an open position is in which he releases the exit path of the airbag from the airbag module, and wherein the Piston performs a screw-like movement as a result of an application and thereby the Pulling devices wound up so that they pull on the airbag cover and pull it out of the Move the closed position to the open position.
  • FIG. 1 shows in cross section schematically a dashboard 1 with an easy to open Airbag cover 2.
  • the latter is plugged into the top and bottom of the dashboard 1 surrounding it is inserted.
  • Ropes 3 are on the airbag cover 2 as pulling devices (Preferably, a rope attached to both side ends of the airbag cover 2).
  • These ropes 3 are each with a screw 4 on a piston 5 (shown in Fig. 2) attached.
  • FIG. 1 shows an airbag 6 which is advantageously "softly" folded of the airbag module housing 7, the body 8 and an airbag module 9.
  • the position of the airbag cover 2 is before and after a crash and thus a triggering of the airbag device shown, which is denoted overall by A.
  • the airbag cover 2 is in a closed position S and shown in an open position O.
  • FIG. 2 shows a section through the airbag module 9 lying perpendicular to FIG. 1 nested parts, such as cartridge 10, gas generator 11, piston 5, gas flow holes 12 for the action of the piston 5 (on one end face) and gas flow holes 13 for the airbag 6 can already be understood from the illustration alone shown.
  • the ropes 3 are fastened to the piston 5 by means of screws 14. Guarantee spacer rings 15 the mobility of the piston 5 in the housing 16.
  • a gas generator housing 16 and the gas generator 11 are preferably provided with covers 17 and 18.
  • FIG. 4 a section at the level of the screw connection 4 is shown in FIG. 4. It is illustrated here how the piston 5, which also rotates, the screw connection 4 during a crash in a new position and thus the airbag cover 2 to the airbag module 9 draws.
  • the gas generator housing 16 is angled to further clarify the invention shown.
  • the link guides 20 and a gas passage hole 21 are shown at least one of the link guides 20 has a “brake” 22 attached to it.
  • This "Brake” 22 acts by bending and clamping the screw (s) 14 in the end position.
  • the Brake 22 is intended to prevent the airbag cover 2 from striking energy (approx. 400 g) is thrown back again.
  • Other locking, clamping and locking mechanisms are the skilled worker familiar and can be used accordingly.
  • the airbag device preferably contains an explosive-driven mechanism that pulls the airbag cover into the airbag module.
  • the Mechanics is designed such that a precisely sealed piston in the form of a cup is placed over the generator and at the same time is guided in the housing of the module. additionally the piston can move screwing in guide rails in the housing in such a way that ropes or other connecting means, e.g. Bands, in the transverse and longitudinal directions be moved due to the helical backdrop.
  • a rope connection can be attached to the piston and guided in the backdrop that rope connection and the backdrop form a unit.
  • the backdrop guide (s) can be designed in this way be that there is a sufficient movement component to move the airbag cover (s) is available.
  • the mechanism for moving the airbag cover into the module or dashboard is very simple. Such airbag devices are particularly advantageous for lightweight or easy-to-open airbag covers, such as those that are not in the valve body are integrated.
  • FIG. 6 shows an airbag generator 109 attached to the annular piston 101 and 102 in this way are that a gas outlet 106 is formed between the annular piston 101 and 102.
  • a gas outlet 106 is formed between the annular piston 101 and 102.
  • pull cables 103 and 109 fastened by means of thimbles 110 and 111.
  • the annular pistons 101 and 102 are on the outside to form a compression space 114 with a cylindrical tube 115 sheathed.
  • the cylindrical tube 115 has covers on both sides 116 and 117 provided so that the ring pistons 101 and 102 are limited in their movement.
  • Dampers 104 and 105 are installed to limit the energy of the ring pistons 101 and 102.
  • the annular pistons 101 and 102 are sealed with a pressure and / or temperature melting Plastic 119, such as. B. POM.
  • End walls 120 and 121 of an airbag box or module housing 122 are provided with a formation 126 such that Airbag flaps 123, 124 rest there and slide around them on a roof-shaped gable 125, as shown in Figure 7.
  • FIG. 7 shows a side view of FIG. 6.
  • Figure 8 shows the same system, but with deflection rollers 127 and 128, which, as in the Figure is shown, are mounted between the generator 118 and the cylindrical tube. This creates a very space-saving solution.
  • the pull cables 103 and 109 are through the Cover 116 and 117 pushed through in such a way that they can be mounted on the airbag flaps 123, 124 can grip easily.
  • Figure 10 shows an alternative mechanism to the two Ring pistons 101 and 102 in the event that they differ due to the resistance of the airbag flaps should run fast and far and thus the airbag flaps 123 and 124 slant would pull. To avoid this problem, ring pistons 101 and 102 Racks 127 and 128 attached in such a way (FIG.
  • both ring pistons 101 and 102 must run in the same way.
  • plastic toothed wheels 131 and 132 minimize the leakage flow of the gas and are designed so that they are by pressure and / or Melt heat.
  • FIG. 11 shows a single annular piston 132, which is used in the event of a gas leak 106 on one side on a generator 118.
  • the pull cables 103 and 109 are as shown is guided and in this alternative along the outside along the airbag module 113.
  • an airbag device with a simple airbag cover retraction mechanism created that over a piston, which is put over a generator, and the Gas pressure of the latter is driven. Movement and strength are sufficient in any case for easy-to-open airbag covers (low weight, separate component).
  • the invention creates a drive mechanism for flaps of an airbag module in a space-saving design. This is done with a screw path of a piston for winding pull cables. This is not achieved according to the invention with annular pistons for such a case that the airbag generator small in diameter and predominantly in length fills the module, so that for example a cup flask cannot be accommodated. It will be space-saving Ring pistons used for thin and long generators. There is also an internal rope guide an advantage in the module. A melting piston seal can be used Come into play. Furthermore, a simple frontal access of the pull cables can be provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un dispositif sac gonflable comprenant un module et au moins un couvercle qui est relié par des dispositifs de traction à un piston, ce piston étant animé d'un mouvement linéaire par actionnement pyrotechnique. Lorsque le piston est actionné, le couvercle passe d'une position fermée, dans laquelle il obstrue la voie permettant à un sac gonflable de sortie de son module, à une position ouverte, dans laquelle il libère la voie permettant au sac gonflable de sortir de son module. Le piston est soumis à un guidage forcé hélicoïdal et les dispositifs de traction sont conçus sous forme de câbles de telle façon que, lors de son actionnement, le piston exécute une rotation pendant son mouvement linéaire, enroulant ainsi les dispositifs de traction. L'invention concerne également un procédé de fonctionnement d'un dispositif sac gonflable. Selon ce procédé, au moins un couvercle sac gonflable quitte, à l'aide de dispositifs de traction par un piston qui est animé d'un mouvement linéaire par actionnement pyrotechnique, une position fermée dans laquelle il obstrue la voie permettant au sac gonflable de sortir de son module, pour passer dans à position ouverte dans laquelle il libère la voie permettant au sac gonflable de sortir de son module. Lors de son actionnement, le piston exécute un mouvement hélicoïdal enroulant ainsi les dispositifs de traction de telle façon qu'ils tirent sur le couvercle, l'amenant ainsi de la position fermée à la position ouverte.

Claims (11)

  1. Dispositif à coussin gonflable de sécurité comprenant un module à coussin gonflable de sécurité (9) et au moins un couvercle de coussin gonflable de sécurité (2) qui est relié à un piston (5) au moyen de dispositifs de traction (3), lequel peut effectuer une course motrice par effet pyrotechnique pour accomplir un mouvement linéaire, le couvercle du coussin gonflable de sécurité (2), lors de la course motrice du piston (5), étant déplacé d'une position fermée dans laquelle il recouvre une voie de sortie d'un coussin gonflable de sécurité (6) hors du module à coussin gonflable de sécurité (9), vers une position ouverte dans laquelle il libère la voie de sortie du coussin gonflable de sécurité (6) hors du module à coussin gonflable de sécurité (9) et les dispositifs de traction (3) étant réalisés sous la forme de câbles, caractérisé en ce qu'il est prévu un guidage forcé de type vis (20) pour le piston (3) de manière à ce que le piston (5), du fait d'une course motrice, effectue en plus un mouvement rotatif pendant son mouvement linéaire et enroule à cette occasion les dispositifs de traction (3).
  2. Dispositif à coussin gonflable de sécurité selon la revendication 1, caractérisé en ce que le guidage forcé est formé par au moins un guide coulissant (20) le long du trajet de déplacement du piston (5), le piston (5) présentant au moins un prolongement (14) qui repose sur le guide coulissant (20) ou qui pénètre dans le guide coulissant (20).
  3. Dispositif à coussin gonflable de sécurité selon la revendication 2, caractérisé en ce que l'au moins un prolongement (14) est formé par un boulon ou une vis (14).
  4. Dispositif à coussin gonflable de sécurité selon la revendication 2 ou 3, caractérisé en ce que deux prolongements (14) espacés sont prévus sur le piston (5) dans le sens de son mouvement linéaire et un guide coulissant (20) est associé à chacun des ces deux prolongements (14).
  5. Dispositif à coussin gonflable de sécurité selon l'une des revendications 2 à 4, caractérisé en ce que les dispositifs de traction (3) saisissent le piston (5) par le biais des prolongements (14) présents de ce dernier.
  6. Dispositif à coussin gonflable de sécurité selon l'une des revendications précédentes, caractérisé en ce que les dispositifs de traction comprennent au moins un fil, un câble (3) ou une bande au moyen duquel le couvercle du coussin gonflable de sécurité (2) est relié au piston (5).
  7. Dispositif à coussin gonflable de sécurité selon la revendication 6, caractérisé en ce que le câble (3) ou le fil est en métal ou que la bande se compose d'une matière textile ou d'une matière plastique ou d'un mélange de celles-ci.
  8. Dispositif à coussin gonflable de sécurité selon l'une des revendications précédentes, caractérisé en ce que le piston (5) est retourné à la manière d'une tasse au-dessus d'un générateur de gaz (11) du module à coussin gonflable de sécurité (9).
  9. Dispositif à coussin gonflable de sécurité selon l'une des revendications précédentes, caractérisé en ce que le piston (5) est guidé dans un boítier (7) du module à coussin gonflable de sécurité (9), notamment dans un boítier (16) du générateur de gaz (11).
  10. Dispositif à coussin gonflable de sécurité selon l'une des revendications précédentes, caractérisé en ce que le guide coulissant (20) comprend un bord de commande ou une coulisse fendue.
  11. Procédé de fonctionnement pour un dispositif à coussin gonflable de sécurité, avec lequel au moins un couvercle de coussin gonflable de sécurité (2) est déplacé d'une position fermée dans laquelle il recouvre une voie de sortie d'un coussin gonflable de sécurité (6) hors du module à coussin gonflable de sécurité (9), vers une position ouverte dans laquelle il libère la voie de sortie du coussin gonflable de sécurité hors du module à coussin gonflable de sécurité, au moyen de dispositifs de traction (3) par un piston (5), lequel effectue une course motrice par effet pyrotechnique pour accomplir un mouvement linéaire, caractérisé en ce que le piston (5), du fait d'une course motrice, effectue un mouvement à la manière d'une vis et enroule à cette occasion les dispositifs de traction (3) de manière à ce que ceux-ci tirent sur le couvercle de coussin gonflable de sécurité (2) et le déplacent de sa position fermée vers sa position ouverte.
EP01940129A 2000-04-07 2001-04-09 Dispositif sac gonflable et son procede de fonctionnement Expired - Lifetime EP1274611B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE20006449U 2000-04-07
DE20006449 2000-04-07
DE20011357U 2000-06-28
DE20011357 2000-06-28
PCT/DE2001/001379 WO2001076918A1 (fr) 2000-04-07 2001-04-09 Dispositif sac gonflable et son procede de fonctionnement

Publications (2)

Publication Number Publication Date
EP1274611A1 EP1274611A1 (fr) 2003-01-15
EP1274611B1 true EP1274611B1 (fr) 2004-09-01

Family

ID=26056190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01940129A Expired - Lifetime EP1274611B1 (fr) 2000-04-07 2001-04-09 Dispositif sac gonflable et son procede de fonctionnement

Country Status (5)

Country Link
US (1) US6685216B2 (fr)
EP (1) EP1274611B1 (fr)
JP (1) JP2003534184A (fr)
DE (1) DE50103470D1 (fr)
WO (1) WO2001076918A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE326368T1 (de) * 2001-02-12 2006-06-15 Faurecia Innenraum Sys Gmbh Vorrichtung und verfahren zur abdeckung eines airbags
EP1521691B1 (fr) 2001-12-03 2008-03-19 Inova GmbH Technische Entwicklungen Systeme d'airbag et procede pour le faire fonctionner
WO2005028263A2 (fr) 2003-09-16 2005-03-31 Inova Gmbh Dispositif sac gonflable et son mode de fonctionnement

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0449012Y2 (fr) * 1986-12-22 1992-11-18
JP2759819B2 (ja) * 1989-05-24 1998-05-28 マツダ株式会社 自動車のエアバッグ装置
JPH03102359U (fr) * 1990-02-07 1991-10-24
JP2677059B2 (ja) * 1991-08-20 1997-11-17 日産自動車株式会社 エアバッグ装置
DE4442543A1 (de) * 1994-11-30 1996-01-25 Daimler Benz Ag Gassackeinheit in einem Fahrzeug
US5899488A (en) 1997-03-26 1999-05-04 Inova Gmbh Technische Entwicklungen Air bag arrangement and triggering process therefor
DE19726878A1 (de) 1997-03-26 1998-10-08 Inova Gmbh Tech Entwicklungen Airbagvorrichtung
DE19733896A1 (de) 1997-06-24 1999-02-11 Inova Gmbh Tech Entwicklungen Airbagvorrichtung
WO1999001564A1 (fr) 1997-07-04 1999-01-14 Dsm N.V. Procede de modification de composes toxiques et/ou ayant mauvais gout
DE19844412A1 (de) 1997-09-26 1999-07-01 Inova Gmbh Tech Entwicklungen Sicherheitseinrichtung für ein Fahrzeug mit einem Lenkrad an einer Lenksäule
DE19750182C2 (de) * 1997-11-13 2001-09-20 Autoliv Dev Airbagmodul mit einem Antrieb für die Abdeckklappe
EP1077863B1 (fr) 1998-05-11 2008-06-11 ThyssenKrupp Presta AG Colonne de direction de securite, systeme de securite pour un vehicule, vehicule equipe d'un systeme de securite et procede de securite
DE59914327D1 (de) 1998-05-27 2007-06-14 Volkswagen Ag Fahrzeugteil mit einer airbagvorrichtung und herstellungsverfahren für ein solches fahrzeugteil
JP2000344041A (ja) * 1999-06-08 2000-12-12 Takata Corp エアバッグ装置
DE50010180D1 (de) * 1999-08-24 2005-06-02 Volkswagen Ag Airbagvorrichtung mit gesteuerter abdeckeinrichtung
DE29914924U1 (de) * 1999-08-25 2000-01-20 TRW Airbag Systems GmbH & Co. KG, 84544 Aschau Gassack-Modul
DE10010589C1 (de) * 2000-03-03 2001-07-19 Autoliv Dev Airbagmodul mit extern angeordnetem Antrieb für die Abdeckung

Also Published As

Publication number Publication date
US6685216B2 (en) 2004-02-03
WO2001076918A1 (fr) 2001-10-18
JP2003534184A (ja) 2003-11-18
EP1274611A1 (fr) 2003-01-15
DE50103470D1 (de) 2004-10-07
US20030067146A1 (en) 2003-04-10

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